Pool



FIG. 1 is a front, right and top perspective view of a pool, showing my new design;

FIG. 2 is a rear, left and bottom perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a front elevational view thereof;

FIG. 8 is a rear elevational view thereof; and,

FIG. 9 is an enlarged view of the portion labeled 9 in FIG. 1 thereof.

The dot-dash broken lines depict the boundaries of the enlargements that form no part of the claimed design. 

CLAIM The ornamental design for a pool, as shown and described. 